Hi all.
Firs hurdle that I need to clear is that the Arduino IDE doesn't seem to be picking up the sensor in the Serial Monitor.
I know that I have everything hooked up correctly to the breadboard and Arduino, but I'll include pictures just in case what I know is wrong.
Thanks for your help,
Dean
Having Trouble Connecting R503 Fingerprint Sensor to Arduino
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- DeanEinGrey
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Having Trouble Connecting R503 Fingerprint Sensor to Arduino
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- mikeysklar
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Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Dean,
The connector cables look a bit rough (solder points at breadboard pins), but I think the place to start here is with the 5v and GND connection not being shown in your Arduino photo.
The connector cables look a bit rough (solder points at breadboard pins), but I think the place to start here is with the 5v and GND connection not being shown in your Arduino photo.
- DeanEinGrey
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Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Hi Mickey and thanks for the reply.
As it turns out, that wasn't the problem.
I spent most of last night thinking that I had overlooked that, and possibly wasn't getting power, but I just hooked everything up again and still have nothing.
Thanks for trying to help, though.
As it turns out, that wasn't the problem.
I spent most of last night thinking that I had overlooked that, and possibly wasn't getting power, but I just hooked everything up again and still have nothing.
Thanks for trying to help, though.
- mikeysklar
- Posts: 13936
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Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Which sketch are you attempting to run?
Can you post an updated photo of your wiring?
It would probably be a good idea to verify with a multimeter that you connections from the Arduino to to the fingerprint sensor are complete as they look fragile.
Can you post an updated photo of your wiring?
It would probably be a good idea to verify with a multimeter that you connections from the Arduino to to the fingerprint sensor are complete as they look fragile.
- DeanEinGrey
- Posts: 5
- Joined: Tue Jul 13, 2021 4:06 pm
Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
I'm working on a re-solder right now. Will post new photos if problem persists.
- DeanEinGrey
- Posts: 5
- Joined: Tue Jul 13, 2021 4:06 pm
Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Hi Mickey.
I don't have a multimeter, but I did re-solder my connections and the arduino IDE is still no finding the sensor.
I'm using the Enroll script recommended by Adafruit.
Sending a new photo of wiring with this message.
I don't have a multimeter, but I did re-solder my connections and the arduino IDE is still no finding the sensor.
I'm using the Enroll script recommended by Adafruit.
Sending a new photo of wiring with this message.
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- jerryn
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Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Check the R503 user manual https://cdn-shop.adafruit.com/product-f ... manual.pdf
The wires colors are different. The green and yellow are the serial lines (Rx/TX) , the white is not used.
The wires colors are different. The green and yellow are the serial lines (Rx/TX) , the white is not used.
- mikeysklar
- Posts: 13936
- Joined: Mon Aug 01, 2016 8:10 pm
Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Good find on the coloring change and this new setup you have put together looks more stable.
Looking at the Wiring it appears that you are still running a connecting wire from the R503 white (unused) or am I seeing some breadboard alignment confusion from the photo?
The connections from the R503 we need to focus on for a moment are
yellow (out) ---> Arduino UNO (pin #2 software RX)
green (in) --> Arduino UNO (pin #3 software TX)
Looking at the Wiring it appears that you are still running a connecting wire from the R503 white (unused) or am I seeing some breadboard alignment confusion from the photo?
The connections from the R503 we need to focus on for a moment are
yellow (out) ---> Arduino UNO (pin #2 software RX)
green (in) --> Arduino UNO (pin #3 software TX)
- DeanEinGrey
- Posts: 5
- Joined: Tue Jul 13, 2021 4:06 pm
Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
Thanks for the information, Jerryn.jerryn wrote:Check the R503 user manual https://cdn-shop.adafruit.com/product-f ... manual.pdf
The wires colors are different. The green and yellow are the serial lines (Rx/TX) , the white is not used.
I actually decided to play around with the wiring, after testing the signal flow with a multimeter, and found that to be the case.
I'm still having a bit of an issue getting the LED ring to light up when it senses a fingerprint. I've looked at the manual and can't really find any helpful information on that topic besides that wire 6 is the touch indication power supply.
If you've got any information on that, I'd greatly appreciate it.
Thanks,
Dean
P.S.: I'm sending an updated picture of my wiring minus the connections that I tried to make for the 5 and 6 wires (blue and white, respectively) because nothing of what I tried worked.
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- jerryn
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Re: Having Trouble Connecting R503 Fingerprint Sensor to Ard
The LED Ring id controlled by a command to the sensor, not the wires.
In the manual scroll down to the 'Aura Control" section - Instruction code 0x35
For Arduino , it appears to be controlled by this function https://github.com/adafruit/Adafruit-Fi ... t.cpp#L339
I have not used it with Arduino myself.
I use it with CircuitPython.
In the CircuitPython Library, it is controlled here https://github.com/adafruit/Adafruit_Ci ... nt.py#L323
I hope that helps.
In the manual scroll down to the 'Aura Control" section - Instruction code 0x35
For Arduino , it appears to be controlled by this function https://github.com/adafruit/Adafruit-Fi ... t.cpp#L339
I have not used it with Arduino myself.
I use it with CircuitPython.
In the CircuitPython Library, it is controlled here https://github.com/adafruit/Adafruit_Ci ... nt.py#L323
I hope that helps.
Please be positive and constructive with your questions and comments.